CVE-2005-1959 in jammail
Summary
by MITRE
jammail.pl in jamchen JamMail 1.8 allows remote attackers to execute arbitrary commands via shell metacharacters in the mail parameter.
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Analysis
by VulDB Data Team • 11/07/2024
The vulnerability identified as CVE-2005-1959 affects jammail.pl, a component of jamchen JamMail version 1.8, presenting a critical remote command execution risk. This flaw exists within the mail parameter handling mechanism of the script, where insufficient input validation allows malicious actors to inject shell metacharacters that are subsequently interpreted and executed by the system. The vulnerability represents a classic example of improper input sanitization and command injection, where user-supplied data flows directly into shell execution contexts without adequate filtering or escaping mechanisms.
The technical implementation of this vulnerability stems from the script's failure to properly sanitize or escape user input before incorporating it into system commands. When the mail parameter contains shell metacharacters such as semicolons, ampersands, or backticks, these characters are interpreted by the underlying shell, allowing attackers to chain additional commands beyond the intended functionality. This behavior aligns with CWE-77, which specifically addresses improper neutralization of special elements used in system calls, and represents a fundamental breakdown in input validation and output encoding practices. The vulnerability operates at the intersection of multiple attack vectors including command injection, remote code execution, and privilege escalation scenarios.
The operational impact of this vulnerability extends beyond simple command execution to encompass complete system compromise potential. Remote attackers can leverage this weakness to execute arbitrary code with the privileges of the web server process, potentially leading to full system takeover, data exfiltration, or persistent backdoor installation. The attack surface is particularly concerning as jammail.pl appears to be a mail processing script that likely runs with elevated privileges to handle email operations, making successful exploitation particularly dangerous. This vulnerability directly maps to ATT&CK technique T1059.001 for command and scripting interpreter, and T1068 for exploit for privilege escalation, enabling attackers to move laterally within compromised environments and establish persistent access.
Mitigation strategies for CVE-2005-1959 require immediate implementation of input validation and sanitization measures within the jammail.pl script. The primary remediation involves implementing proper escaping or encoding of user-supplied input before incorporating it into any system command execution contexts. Organizations should consider adopting parameterized command execution where possible, avoiding direct shell invocation with user input. Additionally, implementing proper access controls and privilege separation can limit the impact of successful exploitation attempts. Regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in other components of the system. The vulnerability also underscores the importance of keeping software components updated and following secure coding practices that prevent injection attacks through proper input handling and output encoding mechanisms.